<?php
require_once 'db_conn.php';
header("content-type:text/html:charset=utf-8");

$username = $_POST['username'];
$sex = $_POST['sex'];
$message = $_POST['message'];
$imgurl = $_POST['imgurl'];
$time_at = time();

$id = $_POST['id'];
$id = intval($id);
   
$sql ="
    UPDATE `bbs`.`t_message` 
    SET
    `username` = '$username' ,
    `sex` = '$sex' ,
    `content` = '$message' ,
    `avater` = '$imgurl' ,
    `time_at` = '$time_at'
    WHERE `t_message`.`id` = $id;
 
";

$result = $conn->query($sql);
if($result>0){
header("location:index.php");
}
